Which of the following compounds is least soluble
in water?
(1) copper (ii) chloride
(2) aluminum acetate
(3) iron (iii) hydroxide
(4) potassium sulfate

Acylinder is filled with 2.00 moles of nitrogen, 3.00 moles of argon and 5.00 moles of helium. if the gas mixture is at stp, what is the partial pressure of the argon

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.